What airlines fly to Islip, New York?

Spirit Airlines, United Airlines and Delta are the top three most popular airlines that fly to Islip, New York from Houston according to our data. Spirit Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 7 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Houston to Islip Long Island?

Frontier is the most popular carrier operating from Houston to Islip Long Island

When did momondo last update prices for flights from Houston to Islip Long Island Airport?

Prices for flights from Houston to Islip Long Island Airport refresh daily.

How many operators does momondo search for flights from Houston to Islip Long Island Airport?

There is 1 operator available for flights from Houston to Islip Long Island Airport as of December 2025.

How old do you have to be to fly from Houston to Islip Long Island Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Houston to Islip Long Island Airport.

What documentation or ID do you need to fly to Islip Long Island Airport?

The required travel and health documents for your Islip Long Island Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Islip Long Island Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$71 Cheap Flights from Houston to Islip in 2025/26

1 adult

0 bags

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Find the cheapest flights from Houston to New York

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:19 pm - 7:51 pm

IAH

ISP

22h 32m1 stop

7:58 pm - 2:57 pm

ISP

IAH

19h 59m1 stop

$169Multiple Airlines

Sun, Jan 11 - Thu, Jan 15

9:07 am - 11:59 pm

IAH

ISP

13h 52m1 stop

8:19 pm - 7:54 am

ISP

IAH

12h 35m1 stop

$183Frontier

Sat, Mar 7 - Mon, Mar 9

9:34 pm - 1:09 pm

IAH

ISP

14h 35m1 stop

2:04 pm - 10:01 am

ISP

IAH

20h 57m1 stop

$184Frontier

Sat, Dec 27 - Mon, Jan 5

11:08 am - 6:38 pm

IAH

ISP

6h 30m1 stop

7:53 pm - 10:13 am

ISP

IAH

15h 20m1 stop

$191Frontier

Fri, Jan 30 - Sun, Feb 1

4:54 pm - 10:46 pm

IAH

ISP

28h 52m1 stop

8:54 pm - 9:57 pm

ISP

IAH

26h 03m1 stop

$202Frontier

Mon, Jan 12 - Mon, Jan 19

8:19 pm - 7:51 pm

IAH

ISP

22h 32m1 stop

7:58 pm - 10:33 am

ISP

IAH

15h 35m2 stops

$210Multiple Airlines

Sun, Jan 11 - Thu, Jan 15

6:00 am - 11:55 am

HOU

ISP

4h 55m1 stop

5:55 am - 1:20 pm

ISP

HOU

8h 25m2 stops

$321Southwest

Sun, Jan 11 - Thu, Jan 15

3:00 pm - 10:20 pm

HOU

ISP

6h 20m2 stops

5:55 am - 1:20 pm

ISP

HOU

8h 25m2 stops

$362Southwest

Sun, Jan 11 - Thu, Jan 15

8:40 pm - 10:15 am

HOU

ISP

12h 35m1 stop

12:40 pm - 8:45 pm

ISP

HOU

9h 05m1 stop

$370Southwest

Sun, Jan 4 - Thu, Jan 8

8:40 pm - 10:15 am

HOU

ISP

12h 35m1 stop

3:45 pm - 10:40 pm

ISP

HOU

7h 55m2 stops

$376Southwest

Sun, Jan 4 - Thu, Jan 8

Southwest flights from Houston to Islip, New York

Our best Southwest deals on Houston to Islip, New York flight tickets

Southwest

Jan 11

HOU6:00 amHouston Hobby

4h 55m

1 stop

ISP11:55 amIslip Long Island

Jan 15

ISP5:55 amIslip Long Island

8h 25m

2 stops

HOU1:20 pmHouston Hobby

$321

Find similar

Southwest

Jan 11

HOU3:00 pmHouston Hobby

6h 20m

2 stops

ISP10:20 pmIslip Long Island

Jan 15

ISP5:55 amIslip Long Island

8h 25m

2 stops

HOU1:20 pmHouston Hobby

$362

Find similar

Southwest

Jan 4

HOU8:40 pmHouston Hobby

12h 35m

1 stop

ISP10:15 amIslip Long Island

Jan 8

ISP12:40 pmIslip Long Island

9h 05m

1 stop

HOU8:45 pmHouston Hobby

$370

Find similar

Frontier flights from Houston to Islip, New York

Our best Frontier deals on Houston to Islip, New York flight tickets

Frontier

Mar 7

IAH9:07 amHouston George Bush Intcntl

13h 52m

1 stop

ISP11:59 pmIslip Long Island

Mar 9

ISP8:19 pmIslip Long Island

12h 35m

1 stop

IAH7:54 amHouston George Bush Intcntl

$183

Find similar

Frontier

Dec 27

IAH9:34 pmHouston George Bush Intcntl

14h 35m

1 stop

ISP1:09 pmIslip Long Island

Jan 5

ISP2:04 pmIslip Long Island

20h 57m

1 stop

IAH10:01 amHouston George Bush Intcntl

$184

Find similar

Frontier

Jan 30

IAH11:08 amHouston George Bush Intcntl

6h 30m

1 stop

ISP6:38 pmIslip Long Island

Feb 1

ISP7:53 pmIslip Long Island

15h 20m

1 stop

IAH10:13 amHouston George Bush Intcntl

$191

Find similar

Fly from

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Route

Depart

Return

Price

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sun 1/11

8:19 pm-7:51 pm

1 stop22h 32m

Islip Long Island

Thu 1/15

7:58 pm-2:57 pm

1 stop19h 59m

$169

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sat 3/7

9:07 am-11:59 pm

1 stop13h 52m

Islip Long Island

Mon 3/9

8:19 pm-7:54 am

1 stop12h 35m

$183

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sat 12/27

9:34 pm-1:09 pm

1 stop14h 35m

Islip Long Island

Mon 1/5

2:04 pm-10:01 am

1 stop20h 57m

$184

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Fri 1/30

11:08 am-6:38 pm

1 stop6h 30m

Islip Long Island

Sun 2/1

7:53 pm-10:13 am

1 stop15h 20m

$191

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Mon 1/12

4:54 pm-10:46 pm

1 stop28h 52m

Islip Long Island

Mon 1/19

8:54 pm-9:57 pm

1 stop26h 03m

$202

HoustonIslip

IAH - ISP

IAHISP

Houston George Bush Intcntl

Sun 1/11

8:19 pm-7:51 pm

1 stop22h 32m

Islip Long Island

Thu 1/15

7:58 pm-10:33 am

2 stops15h 35m

$210

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Sun 1/11

6:00 am-11:55 am

1 stop4h 55m

Islip Long Island

Thu 1/15

5:55 am-1:20 pm

2 stops8h 25m

$321

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Sun 1/11

3:00 pm-10:20 pm

2 stops6h 20m

Islip Long Island

Thu 1/15

5:55 am-1:20 pm

2 stops8h 25m

$362

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Sun 1/4

8:40 pm-10:15 am

1 stop12h 35m

Islip Long Island

Thu 1/8

12:40 pm-8:45 pm

1 stop9h 05m

$370

HoustonIslip

HOU - ISP

HOUISP

Houston Hobby

Sun 1/4

8:40 pm-10:15 am

1 stop12h 35m

Islip Long Island

Thu 1/8

3:45 pm-10:40 pm

2 stops7h 55m

$376

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Houston to Islip, New York

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Islip, New York?

The cheapest day to depart from Houston to Islip, New York is on a Thursday. Travelers who choose to depart for Islip, New York on a Thursday will often find tickets for as low as $375. The most expensive day to fly to Islip, New York is Tuesday, with ticket prices averaging around $601.

What is the cheapest time of day to depart on your flight to Islip, New York?

Flying to Islip, New York from Houston in the morning is the least expensive time of day to depart. momondo users have found prices as low as $370 when looking at flights departing in the morning. Flights to Islip, New York are more costly in the afternoon, with an average ticket price of $396. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Houston to Islip, New York flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Houston to Islip, New York

Fastest flight time	9h 27m
Direct flights	None

The fastest flight from Houston to Islip, New York takes 9h 27m

There are no direct flights from Houston to Islip, New York. There are no popular flight routes from Houston to Islip, New York.

Search flight deals

How far is Houston to Islip Long Island by plane?
Islip Long Island is 1454.8 mi away from Houston. In terms of flight time, this usually takes a little over 9h 27m.
When did momondo last update prices for flights from Houston to Islip Long Island Airport?
Prices for flights from Houston to Islip Long Island Airport refresh daily.
How many operators does momondo search for flights from Houston to Islip Long Island Airport?
There is 1 operator available for flights from Houston to Islip Long Island Airport as of December 2025.
How old do you have to be to fly from Houston to Islip Long Island Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Houston to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The required travel and health documents for your Islip Long Island Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Islip Long Island Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Houston to Islip, New York

Compare and see reviews for airlines that fly from Houston to Islip, New York with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $336	Free Cancellation	Rating 7.9 4,253 reviews		Search Southwest flights

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

Why use momondo?

Why should I use momondo to find a flight deal from Houston to Islip?

Finding the right flight to Islip from Houston is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Islip quick and easy, saving you time and money.

Can I find flights from Houston to Islip with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Islip from Houston with this policy.

How can momondo help me find flights from Houston to Islip?

momondo helps you find the best flight between Houston and Islip by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Houston to Islip right now. Can momondo alert me if prices change?

Price alerts on flights to Islip from Houston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.